Changing max_async_ports value

[Sajith Parapuram]

Hi,

I would like to change the max_async_ports from command prompt using kmtune and want to reboot the server later. The server is HP-UX 11.11.

The command I am planning to use is

# kmtune -u max_async_ports = 2560

Please let me know this is correct or now.

Thanks

[Sajith Parapuram]

Or can I use

# kmtune -s max_async_ports = 2560

Thanks

[Aneesh Mohan · Accepted solution]

Hi,

kmtune -u is to Update the currently running kernel with the new value for a dynamic parameter.

The parameter max_async_ports is not dynamic one ,so you may have to use with -s only.

#kmtune -s max_async_ports=value
# kmtune -q max_async_ports

Regards,
Aneesh

[Yogesh M Puranik]

Hi Sajith,


You have to user

#Kmtune -s max_async_ports = 2560


It will give you the Warning message

NOTE: The requested changes could not be applied to the currently
running system, for the following reasons:
- The tunable 'max_async_ports' cannot be changed without a reboot.
* The requested changes have been saved, and will take effect at
next boot.
Tunable Value Expression

So Until you reboot the system, the Changed value will not be effective.



Rgds

Yogesh

[SoorajCleris]

Hi Sajith,

The parameter which you are going to change is a static parameter and the new value will take effect in next reboot.

As it is a static paramater, you may use the command

#kmtune -s max_async_ports=2560


* Do not forget to take the back up of kernel.

* It is always better to take Ignite backup :)


Regards,
Sooraj U

[Sajith Parapuram]

Thanks